[joshefin]

Senseair is a Swedish company and definitely not "cheap Chinese crap". Do you know about any research that confirms your statements about the accuracy?

I believe that some of the more expensive sensors are more accurate, but this cheap one may be a good enough solution in some cases (e.g. indoor air monitoring for DIY projects).

[693471]

The research has been done by the weed growing community. I don't know any professional growers using sensors outside of the American Scientific as the cheap ones are inaccurate and failure prone.